Adjustable dirt oval tire grooving tool. This grooving tool is the only tool you will need to groove your 1/18, 1/10 or 1/8 Scale Dirt Oval Front Tires, Rear Tires or even Truck Foams. Teeth are 0.040" in diameter by 0.625 long each, the spacing is 0.120" apart and the depth is adjustable from 0.210 to 0.260 inches. We recommend 0.060" as a starting depth so only push the tool lightly into the tires. Check what you have done and if you need grooves a little deeper then just advance the tool a little deeper on the next pass. You can use a piece of wing wire (as in the picture) if you want to use them for the extreme outside holes to help guide you. The number of grooves and the pattern of the grooves is totally at your choice. On a 1/10 Truck foam tire, you can cut up to 13 grooves. You can cut up to 10 grooves in a 1/10 rear dirt oval tire and up to 7 grooves in a 1/10 front dirt oval tire. You can bunch the grooves on one side of the tire or space them evenly out across the face. No more fumbling with files, forks & paint markers, make the same grooves every time. A "MUST HAVE" for your pit box. Retail Price $44.95 RC4LESS Price $32.95